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Finding the Fourth Proportional to 152,718.90, 228,986.29 and 68,463.81

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Solution

The fourth proportional to 152,718.90, 228,986.29 and 68,463.81 is: 102,654.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,718.90 : 228,986.29 = 68,463.81 : x
  2. Step 2: Convert to fraction form
    152,718.90/228,986.29 = 68,463.81/x
  3. Step 3: Cross multiply
    152,718.90x = 228,986.29 × 68,463.81
  4. Step 4: Simplify right side
    152,718.90x = 15,677,273,851.16
  5. Step 5: Solve for x
    x = 15,677,273,851.16/152,718.90
  6. Step 6: Final answer
    x = 102,654.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.